SSC CGL MATHS QUIZ

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Question 1:

A boat takes 2 hours to cover a certain distance downstream, but it takes 3$\frac{1}{4}$ hours to cover the same distance upstream. If the speed of the stream is 5 km/h, then what is the speed (in km/h) of the boat in still water?

Question 2:

A man rows down a river 30 km in 6 hrs with the stream and returns in 10 hrs. The speed at which he rows in still water is:

Question 3:

A boat covers 40 km in 8 hours along the current and 18 km in 6 hours against the current. What is the speed of the current?

Question 4:

A motor-boat can travel at $10 \mathrm{~km} / \mathrm{h}$ in still water. It travelled $91 \mathrm{km}$ downstream in a river and then return to the same place, taking altogether 20 hours. Find the rate of flow of river.

Question 5:

A person rows upstream a distance of $65 \mathrm{~km}$ in 5 hours and rows downstream a distance of $57 \mathrm{~km}$ in 3 hours. How much time will he take to row a distance of $72 \mathrm{~km}$ in still water?

Question 6:

Sum of the speed of the boat in upstream and downstream is $36 \mathrm{~km} / \mathrm{h}$. The speed of the stream is $3 \mathrm{~km} / \mathrm{h}$. find the time taken to cover the $52.5 \mathrm{~km}$ upstream, assume the speed of the boat in still water is constant throughout.

Question 7:

A motor boat has speed $30 \mathrm{~km} / \mathrm{h}$ in still water. It goes $60 \mathrm{~km}$ down stream and comes back in $\frac{9}{2}$ h. What is the speed of the stream?

Question 8:

A man cover a certain distance in 5 hours Downstream and cover the same distance in 8 hours Upstream. If speed of water is $39 \mathrm{~km} / \mathrm{h}$ then find speed of man.

Question 9:

If the speed of stream is 20% of the speed of boat in still water and it covers 120km upstream in 150 minutes , then what is the downstream speed of boat ?

Question 10:

The time taken by a boat to row 21 km with the stream is same as the time taken by it to row 12 km against the stream. If the speed of boat in still water is 5.5 kmph, find speed of stream?